CN102122221A - Optical touch screen and display device - Google Patents
Optical touch screen and display device Download PDFInfo
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- CN102122221A CN102122221A CN201110080960XA CN201110080960A CN102122221A CN 102122221 A CN102122221 A CN 102122221A CN 201110080960X A CN201110080960X A CN 201110080960XA CN 201110080960 A CN201110080960 A CN 201110080960A CN 102122221 A CN102122221 A CN 102122221A
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Abstract
The invention discloses an optical touch screen and a display device comprising the optical touch screen. The optical touch screen comprises a backlight source, a detection substrate and an optical element, wherein the backlight source is used for emitting a measurement light toward the direction of the detection substrate; a plurality of photosensitive elements in matrix type distribution are arranged on one side of the detection substrate toward the backlight source; the optical element is positioned on one side, away from the backlight source, of the detection substrate; the surface of one side, away from the detection substrate, of the optical element is a touch surface; a touch piece contacted with the touch surface forms a first image on a detection surface of the photosensitive elements through the optical element; an incident interference light source far away from the touch surface by a certain distance forms a second image on the detection surface of the photosensitive elements through the optical element; and the definition of the first image is greater than that of the second image.
Description
Technical field
The present invention relates to the optical instrument technical field, relate in particular to a kind of optical profile type touch-screen, display device.
Background technology
Along with the continuous development and progress of science and technology, various display systems are widely used in the daily life.And along with the raising day by day of living standard, people no longer satisfy the information that passive receiving and displaying system provides, development in recent years a series of products such as touch LCD display screen, IPAD, be equipped with touch-screen on the display system of these products, the function that information shows and information is imported can be integrated, formed a kind of man-machine interaction mode easily and efficiently.
Be integrated in touch-screen on the display system and be generally used for the touch position on touch-screen of detecting touch spare (for example, finger or electronic pen).According to the detection principle difference, touch-screen comprises resistance-type, condenser type, surface acoustic wave type or the like.
Also develop a kind of optical profile type touch-screen in the prior art, in reference to figure 1, just shown the synoptic diagram of optical profile type touch-screen one embodiment in the prior art.Described optical profile type touch-screen comprises: glass substrate 10; Be arranged at the light-sensitive array 11 on glass substrate 10 lower surfaces, described light-sensitive array 11 comprises a plurality of light activated elements of arranging by matrix form; Be positioned at the reflection substrate 16 of light activated element below, the bottom of described reflection substrate 16 is provided with a plurality of reflection protrusion 15 towards glass substrate 10, and a side of described reflection substrate 16 is provided with light source 14.The detection process of described optical profile type touch-screen is specific as follows: the upper surface of finger (or electronic pen) 12 touching glass substrates 10, the measuring light that light source 14 sends projects the tip of finger 12 after the reflection of reflection protrusion 15, measuring light reflects at the tip of finger 12, reflected light projects on the light-sensitive array 11 and is surveyed by light activated element subsequently, finally, know the position of finger 12 finger tip touch points according to detecting catoptrical light activated element position in light-sensitive array 11.
Yet, be interfered the easily influence of light source of the optical profile type touch-screen of prior art, after entering into the optical profile type touch-screen such as parallel beams such as sunshines, can in light activated element, produce stronger undesired signal, influence the accuracy that the optical profile type touch-screen is surveyed touch position.
The technical scheme of more optical profile type touch-screens please refer to the Chinese patent that notification number is CN101266346C.
Summary of the invention
The problem that the present invention solves provides the higher optical profile type touch-screen of a kind of precision.For addressing the above problem, the invention provides a kind of optical profile type touch-screen, comprising: backlight, be positioned at the detection substrate on the backlight, be positioned at survey on the substrate and optical element, the upper surface of described optical element is a touch-surface; Wherein, backlight is used to send the measuring light that directive is surveyed orientation substrate; Survey substrate, it is provided with a plurality of light activated elements that matrix form is arranged that are towards backlight one side described detection substrate; Optical element, it is positioned at the side that described detection substrate deviates from backlight, and the side surface that described optical element deviates from described detection substrate is a touch-surface, and the touch part that the optical profile type touch-screen is touched that contacts with described touch-surface forms first picture through described optical element on the test surface of light activated element; The jamming light source of the described touch face of distance a distance incident forms second picture through described optical element on the test surface of light activated element; The sharpness of described first picture is greater than the sharpness of second picture.
Described optical element comprises light transmission film optical profile type touch-screen as claimed in claim 1, it is characterized in that, described optical element comprises a plurality of a plurality of lens and light transmission films that are positioned at same plane and are the matrix form arrangement, and described lens are arranged in the described light transmission film.
The last touch-surface and the distance between the lens of described optical element are d, and the distance between described lens and the light activated element test surface is D, and the focal length of lens is f, satisfy d greater than f less than 2f, D is greater than the relation of 2f.
The last touch-surface and the distance between the lens of described optical element are d, and the distance between described lens and the light activated element test surface is D, and the focal length of lens is f, satisfies the relation of 1/f=1/d+1/D.
D is 1.5f, and D is 3f.
Described lens are Fresnel Lenses.
The focal distance f of described lens is positioned at the scope of 0.1～3mm.
Also comprise computing unit,, simultaneously, calculate the distance of described touch part to touch-surface based on the imaging formula of object height/image height=object distance/image distance according to the size that touches first picture that the test surface of part on light activated element form.
Described light activated element is the matrix form of m * n to be arranged, and described lens are the matrix form of M * N to be arranged, and satisfy M and be less than or equal to m, and N is less than or equal to the relation of n, and m, n, M and N are natural number.
The present invention also provides a kind of display device that comprises described optical touch screen.
Compared with prior art, the present invention has the following advantages:
1. optical profile type touch-screen filtering interfering light provided by the invention has improved measuring accuracy to the interference of detecting touch position;
2. according to the size of the measured picture of light activated element, can obtain to point distance apart from touch-surface.
Description of drawings
Fig. 1 is the synoptic diagram of prior art optical profile type touch-screen one embodiment;
Fig. 2 is the synoptic diagram of optical profile type touch-screen one embodiment of the present invention;
Fig. 3 is the light path synoptic diagram of optical profile type touch-screen shown in Figure 2;
Fig. 4 is the light path synoptic diagram of interference shown in Figure 2 at the optical profile type touch-screen;
Fig. 5 is the synoptic diagram of another embodiment of optical profile type touch-screen of the present invention.
Specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, specific embodiments of the invention are described in detail below in conjunction with drawings and Examples.
Show the synoptic diagram of optical profile type touch-screen one embodiment of the present invention with reference to figure 2.Described optical profile type touch-screen 100 comprises backlight 120, is positioned at the detection of 110 on the backlight 120 substrate, is positioned at the optical element of surveying on the substrate 110 130, wherein,
Described backlight 120 comprises reflection substrate 106 and light source 104.The reflection of light that described reflection substrate 106 can send light source 104 forms measuring light to the direction of surveying substrate 110 so that when finger touch optical profile type touch-screen the detecting touch position.Particularly, described reflection substrate 106 is a sheet glass, light source 104 is arranged on the side of sheet glass, described light source 104 can be the LED group, being used for timesharing sends red, green, the light of blue three-primary colours, the light that (being upper surface in the drawings) transmissive light source 104 sends towards the surface of surveying substrate 110 1 sides of described sheet glass, the surface that deviates from detection substrate one side of described sheet glass (being lower surface in the drawings) is light tight, and also be provided with a plurality of reflection protrusion 105 on the lower surface, described reflection protrusion 105 can reflect the light that projects on the reflection protrusion 105 to the direction of surveying substrate, thereby forms measuring light.
In other embodiments, described backlight 120 also can be other structures, can launch to the measuring light of surveying orientation substrate and get final product, for example be direct directive survey the light source of substrate 110 directions or repeatedly reflection or reflect after with the light source of measuring light directive detection orientation substrate.
In another embodiment, above-mentioned optical element 130 also can be to comprise light transmission film, be arranged in the light transmission film and be positioned at a plurality of lens combination on same plane or other focusing optics, and described a plurality of lens combination or other focusing optics can play the effect that the touch part of touch-surface is imaged onto the test surface of light-sensitive array 102.
The foregoing description does not constitute the concrete qualification to above-mentioned optical element, and any touch part that can play touch-surface well known to those skilled in the art is imaged onto the structure of effect of test surface of light-sensitive array within protection scope of the present invention.
Described optical element 130 can make the touch part that touches light transmission film 103 upper surfaces, promptly point 108 test surfaces and form first picture at light activated element, simultaneously, described optical element 130 can make the jamming light source (for example the sun or with the similar directional light of the sun) of distance described touch face a distance incident form second picture in the test surface of light activated element.
Described light activated element is used for described picture for example is converted to signal, and described signal is an electric signal, but the present invention is not restricted to this.
Because described optical element 130 can make the sharpness of the sharpness of first picture greater than second picture, described light activated element has detection threshold, because the sharpness of second picture is less, less than described detection threshold, simultaneously because the sharpness of first picture that finger is become is bigger, greater than described detection threshold, therefore, described light activated element is when surveying, can not detect the information that sunshine becomes second picture, thereby the undesired signal of sunshine is carried out filtering, and then the interference of having avoided sunshine (or with sunshine similar directional light) that touch location is surveyed, thereby improved the measuring accuracy of touch location.
Below in conjunction with the specific embodiment of optical element, and optical element further specifies technical scheme of the present invention to the imaging optical path of finger and sunshine.In subsequent embodiment, described jamming light source is example with the sunshine.
With reference to figure 3, show the imaging optical path of optical element shown in Figure 2 one embodiment to sunshine.Optical element described in the present embodiment comprises that a plurality of focal lengths are the lens 203 of f; Described lens 203 are short focal length lens, that is to say that f is less.Is D with lens 203 to the distance of the test surface 204 of light activated element, and the upper surface of light transmission film is d to the distance of lens 203, then satisfies D＞2f, and d is greater than f and less than the relation of 2f.
Represent the sun with 201, and the distance table between the sun 201 and the lens 203 is shown L,, satisfy L so much larger than 2f because the sun is very far away apart from the distance of lens 203, according to imaging formula:
1/f＝1/u+1/v；
F wherein is a focal length, and u is an object distance, and v is an image distance.L is an object distance in the present embodiment, 1/f=1/L+1/v just because object distance L is much larger than 2f, so image distance v greater than f but approximate f, that is to say after the sunshine scioptics 203, between f and 2f and near the position imaging of f.
And in the present embodiment, since the test surface 204 of light activated element apart from the distance D of lens 203 greater than 2f, thereby make the test surface 204 of light activated element far away, so second picture that the sun forms in test surface 204 positions of light activated element is fuzzy picture apart from the distance at sun image space place.
With reference to figure 4, show the imaging optical path of optical element shown in Figure 3 to finger.Because the upper surface of light transmission film is d to the distance of lens 203, so, when the upper surface of finger 206 touching light transmission films, the distance between described finger 206 and the lens 203 is d, owing to d greater than f and less than the relation of 2f, according to imaging formula:
1/f＝1/u+1/v；
F wherein is a focal length, and u is an object distance, and v is an image distance.In the present embodiment between finger 206 and the lens 203 is object distance apart from d, 1/f=1/d+1/v just, because object distance d is greater than f and less than 2f, image distance v that is to say after finger 206 scioptics 203 greater than 2f so, forms in the position greater than 2f to look like.
And in this enforcement, because the test surface 204 of light activated element is apart from the distance D＞2f of lens 203, therefore the position of test surface 204 of pointing image space and light activated element is comparatively approaching, therefore compare at second picture of test surface 204 formation of light activated element with the sun, finger 206 is comparatively clear at first picture of test surface 204 formation of light activated element.
Because sunshine is less in the sharpness of test surface 204 formed second pictures of light activated element, light activated element can't detect the formed signal of the sun, and then the formed signal of sunshine can be carried out filtering, and then the interference of having avoided sunshine (or with sunshine similar directional light) that touch location is surveyed, thereby improved the measuring accuracy of touch location.
In preferred embodiment, to be d, lens 203 satisfy imaging formula to distance (distance between the upper surface of light transmission film and the lens 203 just) between finger and the lens 203 between the distance of the test surface 204 of light activated element is the focal distance f of D and lens 203, i.e. 1/f=1/d+1/D; That is to say that the test surface 204 of light activated element is positioned at the position of finger imaging just, this makes the picture of the finger that the test surface 204 of light activated element detected the most clear, big with sunshine sharpness difference of formed picture on the test surface of light activated element so that better the filtering sunshine at signal that light activated element produced.
Particularly, between the upper surface of light transmission film and the lens 203 is 1.5f apart from d, and lens 203 are 3f to the distance of the test surface 204 of light activated element for D, satisfy imaging formula, be 1/f=1/1.5f+1/3f, when pointing when touching the upper surface of light transmission film, on the test surface 204 of light activated element, form sharply defined image.
Continuation is with reference to figure 2, and a plurality of lens in the printing opacity array 107 become the arranged of M * N, and light activated element becomes the arranged of m * n, satisfies M so to be less than or equal to m; And N is less than or equal to n, that is to say on the both direction of matrix, and the density of light activated element is all greater than the density of lens, thereby makes light activated element detect the lens imaging preferably, and m, n, M and N are natural number.
Particularly, described lens 203 adopt Fresnel Lenses, and Fresnel Lenses is that polyolefine material is annotated the thin slice that pressure forms, and the focal length of Fresnel Lenses is less usually, and the scope of focal length is in the scope of 0.1mm～3mm.A plurality of Fresnel Lenses can be formed in the optical thin film of light-permeable by impression (imprinting) mode, to form optical element.In the practical application, can be according to the numerical value of the focal distance f of lens 203, the upper surface of determining light transmission film to lens 203 apart from d, lens 203 distance D to the test surface 204 of light activated element.
With reference to figure 5, the synoptic diagram of another embodiment of optical profile type touch-screen of the present invention is shown, described optical profile type touch-screen comprises backlight (figure does not show); Be positioned at the detection substrate 320 on the backlight, described detection substrate 320 comprises transparent substrates 303, is positioned at a plurality of light activated elements 304 of transparent substrates 303 towards the backlight one side, and described a plurality of light activated elements 304 are the test surface of matrix form arrangement and described light activated element 304 towards transparent substrates 303; The optical profile type touch-screen also comprises the optical element 330 that is positioned on the detection substrate 320, described optical element 330 comprises light transmission film 306, is arranged at a plurality of lens 305 in the light transmission film 306, described a plurality of lens 305 are arranged according to matrix form in light transmission film 306, form lens arra.Described lens arra can make finger 301 imagings, in the present embodiment, and the image planes of imaging and the test surface coplane of described light activated element 304 when finger 301 touches the upper surface of light transmission film 306, but the present invention is not restricted to this.
Sunshine is less through second image sharpness that optical element forms on the test surface of light activated element 304, and described light activated element 304 can not detect the signal of described second picture, and then has avoided the influence of sunshine to the finger position sensing.
In addition, described optical profile type touch-screen also comprises a computing unit (figure do not show), and described computing unit is connected in described light activated element, the size of finger 301 imagings that can detect according to light activated element, calculate finger 301 and optical element upper surface, just apart from touch-surface distance.
Below in conjunction with Fig. 5, specify the computing unit meter calculates finger 301 and lens 305 distances according to the size of imaging principle.In the existing common practise, the imaging relations formula that has object height/image height=object distance/image distance, in this enforcement, because the size constancy of finger 301, and the distance between lens 305 and the light activated element 304 is constant, therefore object height and image distance are definite value, so image height and object distance are inversely proportional to, as shown in Figure 5, when finger 301 distances from lens 305 were d1, because d1 is bigger, the measuring light that backlight sends was transmitted through finger and reflected in 301 o'clock, reflected light imaging on the light activated element 304 again, therefore in light activated element 304 among the picture A1 not and the corresponding pictures of finger 301; When the close gradually lens 305 of finger 301, when being d2 with the distance of lens 305 and since d2 less than d1, form in the light activated element 304 comprise the picture of part finger 301 as A2, the picture of finger 301 is crescent shape (being the finger tips imaging) in as A2, and size is less; When finger 301 more gradually near lens 305, when being d3 with the distance of lens 305, d3 is less than d2, what form in the light activated element 304 comprises the picture of complete finger 301 as A3; When pointing 301 close lens 305 and touching the upper surface of lens 305, finger 301 is d4 with the distance of lens 305, what form in the light activated element 304 comprises the picture of complete finger 301 as A4, and among the A4 picture of finger 301 greater than the picture of finger 301 among the A3.
The size constancy (being that object height is a definite value) of finger 301, distance between lens 305 and the light activated element 304 constant (being that image distance is a definite value), imaging relations formula according to object height/image height=object distance/image distance, the size of the picture of the finger 301 that light activated element 304 detects (being image height) obtains the relative size (object distance) of distance between finger 301 and the lens 305, because lens 305 are fixed with the spacing of the upper surface (touch face) of light transmission film, so computing unit in the light activated element 304, can deduct the distance between lens 305 and the surface of contact further, thereby obtain distance between finger 301 and the touch face.
This shows, the optical profile type touch-screen of present embodiment not only can obtain to point the position in touch-surface, can also obtain to point distance, and then obtain the three-dimensional position of finger touch position, thereby make optical profile type touch-screen of the present invention be applicable to the 3D display device apart from touch-surface.
To sum up, the precision of optical profile type touch-screen detecting touch provided by the invention position is higher; Can also measure the finger touch position at three-dimensional, and then be applicable to the 3D display device.
Need to prove that in the foregoing description, the touch part of optical profile type touch-screen is example with the finger, but the present invention being not restricted to this, can also be other touch parts such as electronic pen.
Correspondingly, the present invention also provides a kind of display device that comprises above-mentioned optical profile type touch-screen, and described display device can be a liquid crystal indicator, also can be organic LED display device (OrganicLight-Emitting Diode, OLED).
Though the present invention with preferred embodiment openly as above; but it is not to be used for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize the method and the technology contents of above-mentioned announcement that technical solution of the present invention is made possible change and modification; therefore; every content that does not break away from technical solution of the present invention; to any simple modification, equivalent variations and modification that above embodiment did, all belong to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (10)
1. an optical profile type touch-screen is characterized in that, comprising: backlight, survey substrate and optical element,
Wherein,
Backlight is used to send the measuring light that directive is surveyed orientation substrate;
Survey substrate, it is provided with a plurality of light activated elements that matrix form is arranged that are towards backlight one side;
Optical element, it is positioned at the side that described detection substrate deviates from backlight, and the side surface that described optical element deviates from described detection substrate is touch-surface,
The touch part that contacts with described touch-surface forms first picture through described optical element on the test surface of light activated element;
The jamming light source of the described touch face of distance a distance incident forms second picture through described optical element on the test surface of light activated element;
The sharpness of described first picture is greater than the sharpness of second picture.
2. optical profile type touch-screen as claimed in claim 1 is characterized in that, described optical element comprises a plurality of lens and light transmission films that are positioned at same plane and are the matrix form arrangement, and described lens are arranged in the described light transmission film.
3. optical profile type touch-screen as claimed in claim 2 is characterized in that, the touch-surface of described optical element and the distance between the lens are d, distance between described lens and the light activated element test surface is D, the focal length of lens is f, satisfy d greater than f less than 2f, D is greater than the relation of 2f.
4. optical profile type touch-screen as claimed in claim 3, it is characterized in that the touch-surface of described optical element and the distance between the lens are d, the distance between described lens and the light activated element test surface is D, the focal length of lens is f, satisfies the relation of 1/f=1/d+1/D.
5. optical profile type touch-screen as claimed in claim 4 is characterized in that, d is 1.5f, and D is 3f.
6. optical profile type touch-screen as claimed in claim 2 is characterized in that, described lens are Fresnel Lenses.
7. optical profile type touch-screen as claimed in claim 6 is characterized in that, the focal distance f of described lens is positioned at the scope of 0.1～3mm.
8. optical profile type touch-screen as claimed in claim 1, it is characterized in that, also comprise computing unit, according to the size of first picture that touches the test surface formation of part on light activated element, simultaneously, the imaging formula based on object height/image height=object distance/image distance calculates the distance of described touch part to touch-surface.
9. as the described optical profile type touch-screen of any claim of claim 2～8, it is characterized in that described light activated element is the matrix form of m * n and arranges, described lens are the matrix form of M * N and arrange, satisfy M and be less than or equal to m, and N is less than or equal to the relation of n, m, n, M and N are natural number.
10. one kind comprises the display device as the described optical touch screen of any claim of claim 1～9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110080960 CN102122221B (en) | 2011-03-31 | 2011-03-31 | Optical touch screen and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110080960 CN102122221B (en) | 2011-03-31 | 2011-03-31 | Optical touch screen and display device |
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| CN102122221A true CN102122221A (en) | 2011-07-13 |
| CN102122221B CN102122221B (en) | 2013-10-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019474A (en) * | 2012-09-25 | 2013-04-03 | 友达光电股份有限公司 | Optical touch scanning device |
| TWI651569B (en) * | 2018-01-04 | 2019-02-21 | 敦捷光電股份有限公司 | An optical in-display tft-lcd panel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6061177A (en) * | 1996-12-19 | 2000-05-09 | Fujimoto; Kenneth Noboru | Integrated computer display and graphical input apparatus and method |
| CN1928618A (en) * | 2005-08-29 | 2007-03-14 | 安华高科技Ecbuip(新加坡)私人有限公司 | Optical generic switch panel |
| CN101504580A (en) * | 2009-03-06 | 2009-08-12 | 孙倩倩 | Optical touch screen and its touch pen |
| CN101630213A (en) * | 2008-08-22 | 2010-01-20 | 李兴文 | Optical touch screen, optical touch screen light source and touch pen |
-
2011
- 2011-03-31 CN CN 201110080960 patent/CN102122221B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6061177A (en) * | 1996-12-19 | 2000-05-09 | Fujimoto; Kenneth Noboru | Integrated computer display and graphical input apparatus and method |
| CN1928618A (en) * | 2005-08-29 | 2007-03-14 | 安华高科技Ecbuip(新加坡)私人有限公司 | Optical generic switch panel |
| CN101630213A (en) * | 2008-08-22 | 2010-01-20 | 李兴文 | Optical touch screen, optical touch screen light source and touch pen |
| CN101504580A (en) * | 2009-03-06 | 2009-08-12 | 孙倩倩 | Optical touch screen and its touch pen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019474A (en) * | 2012-09-25 | 2013-04-03 | 友达光电股份有限公司 | Optical touch scanning device |
| TWI486844B (en) * | 2012-09-25 | 2015-06-01 | Au Optronics Corp | Optical touch device with scan ability |
| TWI651569B (en) * | 2018-01-04 | 2019-02-21 | 敦捷光電股份有限公司 | An optical in-display tft-lcd panel |
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| CN102122221B (en) | 2013-10-02 |
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Effective date of registration: 20160401 Address after: 710075, arc building, No. 60, West Avenue, new industrial park, hi tech Zone, Shaanxi, Xi'an, 204 Patentee after: Xi'an Yisheng Photoelectric Technology Co., Ltd. Address before: 201203 Shanghai City, Pudong New Area Zhangjiang hi tech park long East Road No. 3000 Building No. 5 room 501B Patentee before: Shanghai Lexvu Opto Mircoelectrics Technology Co., Ltd. |